Southern Research Station Headquarters - Asheville, NC
Main Logo of Southern Research Station, Stating: Southern Research Station - Asheville, NC, with a saying of 'Science you can use!'
[Images] Five photos of different landscape

Publication Information

Mail this page  

Title: Harvest-related edge effects on prey availability and foraging of hooded warblers in a bottomland hardwood forest
Author(s): Kilgo, John C.
Date: 2005
Source: The Condor 107:627-636
Description: The effects of harvest-created canopy gaps in bottomland hardwood forests on arthropod abundance and, hence, the foraging ecology of birds are poorly understood. I predicted that arthropod abundance would be high near edges of group-selection harvest gaps and lower in the surrounding forest, and that male Hooded Warblers (Wilsonia citrina) foraging near gaps would find more prey per unit time than those foraging in the surrounding forest. In fact, arthropod abundance was greater >I00 m from a gap edge than at 0-30 m or 30-100 m from an edge, due to their abundance on switchcane (Arundinuria gigantea); arthropods did not differ in abundance among distances from gaps on oaks (Quercus spp.) or red maple (Acer Rubrum)similarly, Hooded Warbler foraging attack rates were not higher near gap edges: when foraging for fledglings, attack rate did not differ arnong distances from gaps, but when foraging for themselves, attack rates actually were lower 0-30 m from gap edges than 30-100 m or >100 m from a gap edge. Foraging attack rate was positively associated with arthropod abundance. Hooded Warblers apparently encountered fewer prey and presuinably foraged less efficiently where arthropods were least abundant, i.e., near gaps. That attack rates among birds foraging for fledglings were not affected by distance from gap (and hence arthropod abundance) suggests that prey availability may not be limiting at any location across the forest, despite the depressing effects of gaps on arthropod abundance.
View and Print this Publication (734 KB)
Pristine Version: An uncaptured or "pristine" version of this publication is available. It has not been subjected to OCR (Optical Character Recognition) and therefore does not have any errors in the text. However it is a larger file size and some people may experience long download times. The "pristine" version of this publication is available here:

View and Print the PRISTINE copy of this Publication (934 KB)
Publication Notes:
  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
  • Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS Webmaster, srswebmaster@fs.fed.us if you notice any errors which make this publication unuseable.
[ Get Acrobat ] Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility




Publication Links:

FIA Resource Bulletins

Publications Search


Search for on-line publications
containing the following:

 


(Uncheck this box to search all R&D Publications.)

Small logo of the USDASmall logo of the Forest Service